Case studies · verifiable results
What actually moves the needle.
Real cases from B2B companies between 500 K€ and 100 M€ revenue. Verifiable metrics, concrete sectors, levers executed. No "client X". No projections. Just results.
41
Published cases
18+
Sectors covered
+212%
Organic clicks · Antala case
6 months
Organic warranty
Real published cases
Page 1 · Showing 41 of 41
Initube cuts cost per lead by 46% with Google Ads and multilingual SEO
Measuring the hotel booking funnel: from 0 to 425 a month
CEROIL Increases Its Sales on Amazon Sixfold Through Listing Optimization
SEO and GEO Audit for Hotels: +77% More Keywords in 3 Weeks
The two-engine lead generation machine for a high-ticket medical device
Reference Camping in Costa Brava Recovers the Visibility of Its Data
Eninter Elevators’ Transformation: from Digital Presence to B2B Lead Generation Machine
Success Story – JAX: From Visibility to Qualified Lead Generation in Industrial B2B
Your company here?
We can add your case. With real metrics.
30-min audit with Albert Puig. We identify concrete levers applicable to your pipeline. If there is no real upside, we tell you upfront.
THE LONDON Nº1 x Gonzalez Byass Defensive digital and sell-out strategy in the Danish market
Escuela Alemana de Barcelona: Automation with Brevo and Make for an email strategy that gets results
Grup Olivé Case Study: The Digitization of the Restoration Tradition through Local SEO and Artificial Intelligence
Proddigia: Capturing Qualified Leads in the Real Estate Sector with Paid Media
TECTYL – Paid Media Strategy for industrial B2B
Euro Hockey League (EHL) – Filling the stands and winning fans with data and performance
Xaloc and Mestral: 360° Digital Strategy that Doubled the Leads of Examination Academies
Red Cross – AI automation: manual search cut from 8 to 3 hours a week (−62.5%)
Traspaso Dental – Digital revolution in the intermediation of dental clinics
Gamarra: Digital transformation in the metal industry with real impact
Antala: Digitization of the B2B industrial distribution acquisition channel
Peñaclara: How to increase sales with SEO content in mass consumption
Rovi Packaging: Digital transformation of a traditional packaging company
Nutrisport: Digital strategy to turn energy into real engagement
Telefónica: How we raise its internal training in Growth Marketing
Sitges Group: How to reduce dependence on OTAs in vacation rentals
Ambar Lab: Digital activation and growth marketing with a focus on results
Barça Academy: Digital strategy in the U.S. that turns fans into players
MODO CRIPTO – How to position a market leader in the digital ecosystem
IESE Business School – Multiple Campaigns for Parallel Programs
Claret – How in 6 months we got into Google Top 3
Motyvel Yachts – How to improve lead quality in Meta Ads
Mirihi – From invisible to top 1: high-impact SEO strategy in the B2B sector
UNED – 360º Digital Marketing Strategy
Viñas del Vero: paid media on Meta with a €0.62 CPM
Between 8 and 10 new patients a month for two specialist psychologists with Google Search Ads
Las Velas de Mariano breaks its all-time sales record
Mirror in the Sky: Cashmere excellence in the digital age
Gabis – From an emerging brand to a benchmark in children’s accessories
Idilic Festival – From zero to SOLD OUT in its debut
Cal Fruitós: Digital transformation in retail that drives real results
360 Estudio: How to empower architectural firms with digital visual impact
Alicia González Psychology: How a good web design transforms your practice
Reading cases is not executing.
Want the next case? Start with an audit.
30 minutes with Albert Puig to identify concrete levers applicable to your pipeline. If there is no real upside, we tell you before signing.
01 / 02 Methodology · Auditable KPIs
A verifiable case study, not a decorative portfolio.
A verifiable B2B digital marketing case study is public documentation (identified client, specific period, auditable metrics) of an intervention that moved a business KPI (not a vanity one). At cronuts.digital we only publish cases with the client's authorisation, a metric connected to their own CRM or GA4 and a delta attributable via server-side tracking. No "client X". No projections. No extrapolations.
What separates it from a decorative portfolio is the measurement methodology: server-side tracking that withstands ad-blockers and consent mode, revenue tracking connected to the CRM (Holded, HubSpot, Salesforce, Pipedrive), multi-touch attribution with a window that matches the B2B cycle (30–90 days) and a clear split between lead, MQL, SQL and closed deal.
The KPIs we measure in every B2B case
Declared cohort · auditable source · attribution window that matches the sales cycle.
06 dimensions measured
Attributed pipeline
Value in € of the opportunities created and attributed to the channel or campaign, read from the CRM, not from the form.
CAC · Customer acquisition cost
Total marketing and sales spend divided by the new customers closed in the period, with a declared cohort.
MQL → SQL ratio
Marketing-qualified leads that sales accepts as a real opportunity. A gauge of demand quality.
Time-to-deal
Days between the first attributed touchpoint and contract signature. Shows focus on the right accounts vs. mass trafficking.
NRR · Net Revenue Retention
Revenue retained and expanded in existing accounts over 12 months. Separates tactical marketing from a sustainable business lever.
Declared attribution
Every metric with its source: CRM, server-side GA4, source platform. No stray Looker screenshots.
If your agency does not deliver these KPIs every month with a clear definition and an auditable source, you are not measuring case studies: you are collecting screenshots.
02 / 02 Sectors · Verified key result
Cases by sector with a key result.
Same CRONUTS method, different sector. Each card links to the full case with its methodology and auditable metrics.
06Sectors · 36 cases
- Featured case · B2B pipelineIndustrial B2B90 days
Eninter Ascensores · 70+ years in industry
+3.2× attributed pipeline in 90 days
Verified B2B pipelineSee case - B2B SaaS120 days
JAX Inc.
−38% CAC in the US
Global CACSee case - B2B e-commerce180 days
Antala Group
+212% organic clicks
Organic SEOSee case - Education45 days
Deutsche Schule Barcelona
43% lead-to-AI-assistant
AI conversionSee case - Health · Clinics90 days
Client under NDA
+58% Local SEO patients
Local SEOSee sector - Professional services12 months
González Byass · The London nº1
Sell-out flat vs −20%
Retail performanceSee case
Aggregated data from the cases published with the client's authorisation. Periods and methodology detailed in each case sheet. Cases under NDA referenced anonymously with explicit permission.
03 / 03 FAQ · B2B case studies
Frequently asked questions about our cases.
How do you measure a B2B digital marketing case study?
Every case carries server-side tracking connected to the client's CRM (Holded, HubSpot, Salesforce, Pipedrive). We measure attributed pipeline in €, CAC by cohort, MQL→SQL ratio, time-to-deal and NRR. The client can audit the metrics: no stray Looker screenshots.Which case studies do you publish and which do you not?
We only publish cases with the client's written authorisation and metrics that can be audited in their own system. Roughly 60% of our clients opt for a full NDA: we only share those cases under a confidentiality agreement in an advanced sales process.How do you handle confidential client data?
We sign a mutual NDA before kick-off. Cases under NDA are anonymised with the client's permission: sector, size and numerical delta, with no name, no domain and no identifiable ranges. Any mention requires written approval.How can I verify that the case data is real?
Every published case includes the client's name, sector, period and a link to the client's website. For serious sales processes we provide a direct reference with the decision-maker, anonymised CRM screenshots and, where applicable, a 30-min session with the current client.What separates a real case study from a decorative portfolio?
An identified client, a specific period, a business KPI (not a vanity one), an auditable data source and a declared attribution method. If any one of these five elements is missing, it is not a case study: it is an ad for the agency itself.How do I put my company forward as the next case?
Request a free audit. If the ICP fits (B2B 500K€–100M€), we start a Sprint 0 with KPIs declared from the kick-off. Your case is only published if you want it to be and the results are in your CRM, not in a picture we painted.
Glossary · key terms in B2B cases
06 Auditable terms
- Verifiable case study
- Public documentation with an identified client, period, auditable metric and declared attribution method.
- Server-side attribution
- Tracking that sends events to the server (not the browser): resilient to iOS 14, ad-blockers and consent mode.
- Attributed pipeline
- Value in € of the opportunities created and linked to a channel or campaign via the CRM, not via the form.
- MQL → SQL ratio
- % of marketing-qualified leads that sales accepts as an opportunity. A gauge of demand quality.
- NRR · Net Revenue Retention
- Revenue retained and expanded in existing accounts over 12 months. A key metric in B2B SaaS.
- Time-to-deal
- Days between the first attributed touchpoint and contract signature. Shows how precise the B2B targeting is.
The Signal · every Friday · free
Less noise. More levers.
One email every Friday. One real B2B case, one proprietary metric, one lever you can execute on Monday. Signed by Albert Puig. No link curation. No summaries. No filler.
- 1 real case with verifiable data
- 1 actionable SOP system
- Proprietary metrics from the cronuts pipeline
- Early access to whitepapers
- Zero generic automation
- 1-click unsubscribe · no double opt-in